Thats a lot of "C's"! On this beautiful 1970 Cadillac Calais, we did not want to cut the dash or modify the vehicle. So we built a custom center console that housed a new Alpine head unit with bluetooth, as well as some Alpine S Series 6.5" speakers. In the back we added a 12" Alpine S Series subwoofer, with an Alpine S series 600 watt amplifier. It turned out great!